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Secure wipe on iPhone 4 and Samsung s3

Posted on 2013-05-28
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Last Modified: 2013-11-21
We know that iPhone 4 and Samsung s3 comes with an option for factory reset so all data can be deleted.  Nevertheless, since mobile phones are coming out every day, we wanted know how can do a secure wipe on both phones.

Please advice.
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Question by:rayluvs
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Expert Comment

by:BlueYonder
ID: 39200900
Here's instructions for manually wiping the iphone: http://www.ehow.com/how_5169825_wipe-iphone-memory.html and Samsung s3: http://www.smerret.com/cell-phones/samsung-galaxy-s3/how-to-hard-reset-wipe-samsung-galaxy-s3.  If you want a remote management solution Miraki is free, http://meraki.cisco.com/products/systems-manager.  AirWatch is another good paid option.
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by:rayluvs
ID: 39201572
Do these links do a "secure wipe"?  

How secure are they?

That is, that when resetting the phones and selling it to another person, can they restore pictures, documents, etc?
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BlueYonder earned 500 total points
ID: 39201888
For the samsung device you may want to encrpt the device first using the instructions here http://reviews.cnet.co.uk/mobile-phones/how-to-make-your-samsung-galaxy-s3-more-secure-50008299/.  iPhone data is encrypted by default.  The wipe will delete all the information.  Someone with the right know how will be able to recover data.  Even data can be recovered from a DOD Wipe.
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Author Comment

by:rayluvs
ID: 39201937
We have googled for any documentation supporting secure wipe on both phone.  From your link we see "Encrypt".  How about iPhone, is there any documentation supporting encryption by default?
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by:BlueYonder
BlueYonder earned 500 total points
ID: 39202248
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Author Comment

by:rayluvs
ID: 39202573
Thank you very much!!! Great Info!!!

Have you seen something similar for the Samsung s3?
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Author Comment

by:rayluvs
ID: 39247114
We want to secure wipe both iPhone 4s and Samsung s3.  When we say secure wipe, we mean  that when all data is deleted, it will be almost impossible to restore data after we sell or give away the devices.  We just want peace of mind that when the device is another person's hand, our data has been off the device and secured wipe.

We have successfully perform the delete/reset on the iphone, now we need to finish with the samsung s3.

Base on the EE helping us in the question, we concluded that the best way to go about it is:

- First encrypt the device based on the linked provided (http://reviews.cnet.co.uk/mobile-phones/how-to-make-your-samsung-galaxy-s3-more-secure-50008299/).
- Then do Hard Reset Wipe based on the provided link (http://www.smerret.com/cell-phones/samsung-galaxy-s3/how-to-hard-reset-wipe-samsung-galaxy-s3).

Please advice if we are on the right direction.
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Author Closing Comment

by:rayluvs
ID: 39530612
Thanx
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